British hurdler Callum Priestley was Friday provisionally suspended from all competition and UK Athletics’ World Class Performance Programme after testing positive for the banned drug clenbuterol.
The suspension follows an out-of-competition test in South Africa in January and Priestley, 21, faces a two-year ban if found guilty of doping.
Clenbuterol is sometimes prescribed to asthma patients to help them with their breathing but can also be used to facilitate more intensive training in the manner of anabolic steroids and has the advantage of clearing the body faster.
UK Athletics chief executive Niels de Vos said: “I am hugely disappointed that there has been a failed test. UKA continues to give 100 percent support to the work of UK Anti Doping and we maintain our full commitment to drug-free sport.”